Asteroid Alert! Space Rock to Zip by Earth Tonight

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It’s a bird, it’s a plane, no, it’s an asteroid! For the first time in 35 years, scientists and space enthusiasts will have an opportunity to catch a glimpse of an asteroid larger than an aircraft carrier that will whiz between the Earth and the Moon Tuesday evening. Don’t worry. Scientists say this isn’t Armageddon because it won’t hit Earth. Only once every few million years does an object large enough to threaten Earth’s civilization comes along. Smaller flying objects venture near but nothing this large has come as close since 1976.

NASA says the space rock, dubbed “2005 YU55”, will make its closest to earth on Tuesday at 6:28 p.m. EST. Although 2005 YU55 is in an orbit that regularly brings it to the vicinity of Earth, the encounter is the closest this space rock has come for at least the last 200 years, according to NASA. So while anxious astronomers prepare to obtain radar images of the space rock, here’s a look at some other numbers behind asteroid 2005 YU55:

A report last year from the National Research Council found that this level of funding is nowhere near enough to meet a 2020 deadline set by Congress to find 90 percent of near-Earth objects greater than 140-meters in diameter, which would cause regional damage.

1,300The width in feet of the asteroid, which is equal to one-quarter mile.

18The number of hours of a full rotation of the asteroid as it spins slowly.

201,700 Number of miles the asteroid will be from Earth at the point of closest approach.

240,000Number of miles between the Earth and the Moon.

2010NASA last “imaged” the asteroid on April 19, 2010 when the space rock was about 1.5 million miles away from Earth.

1,500The moon will be just under 1,500 miles from the asteroid at the closet time of approach.

2005The year “2005 YU55” was discovered by NASA.

1,700If the asteroid were to hit Earth, scientists say it would blast a crater four miles across and 1,700 feet deep.

8,500Number of near-Earth objects catalogued by NASA to date.

2029The year an Asteroid named Apophis, estimated to be 885 feet across, will fly extremely close to earth on April 13.

2,000Approximately every 2,000 years, a meteoroid the size of a football field hits Earth and causes significant damage.